The people who disagree with it will disagree with it because Obama proposed it.
I wouldn't say that's 100% accurate. While I wouldn't be surprised to see a high correlation between second amendment nutjobs and Obama haters, I'm sure there are some people who are gun crazy that don't necessarily hate Obama, they just hate anything that comes to restricting access to firearms.
In fact, I'm pretty sure I have a Facebook friend that falls in that category: he's very liberal, but also concerned that the government is going to attempt to disarm the citizens in order to keep them passive and easily dominated.
Of course, Obama hasn't even said anything about attempting to collect guns that were purchased through these loopholes, he just wants to close these loopholes, but why let that get in the way of getting outraged?
I think what the president is doing is great in theory. In practice it's going to be tough to enforce. Thanks NRA!
I don't know if it will be. It might not need congressional approval or even support to do the things Obama wants to see done. From what I've read most of the actions Obama is trying to take are things that are within his power as the president to do.